Last year I got myself a first pair of gore-tex B0 boots. Before I used only leather. I took care of those as good as I could. Keeping clean and using special sprays.
However now one boot developed ...

I have a pair of Gore-Tex walking boots that I have used a fair bit now and want to make sure I keep them serviceable for as long as possible. What is the best way to maintain Gore-Tex walking boots? ...